Patents by Inventor Yuji Hazama

Yuji Hazama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11797061
    Abstract: Provided is a biaxial hinge capable of opening up to 360 degrees in which the hinge does not require a complicated mechanism or components with high machining accuracy. The hinge includes first and second shafts (11, 21), joint plates (34, 37, 38) rotatably coupling first and second shafts (11, 21), regulator (36) movable between a first position and a second position along an axial direction of first and second shaft (11, 21), first lock plate (12) rotating together with the first shaft (11) and inhibiting the rotation of first shaft (11) by engaging with regulator (36) located at the first position, lock sleeve (23) rotating together with second shaft (21) and inhibiting the rotation of second shaft (21) by engaging with regulator (36) located at the second position; and a regulation cam (13) feeding regulator (36) from the second position to the first position.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: October 24, 2023
    Assignee: MITSUBISHI STEEL MFG. CO., LTD.
    Inventors: Yuji Hazama, Katsuhito Nishizawa
  • Publication number: 20220075429
    Abstract: Provided is a biaxial hinge capable of opening up to 360 degrees in which the hinge does not require a complicated mechanism or components with high machining accuracy. The hinge includes first and second shafts (11, 21), joint plates (34, 37, 38) rotatably coupling first and second shafts (11, 21), regulator (36) movable between a first position and a second position along an axial direction of first and second shaft (11, 21), first lock plate (12) rotating together with the first shaft (11) and inhibiting the rotation of first shaft (11) by engaging with regulator (36) located at the first position, lock sleeve (23) rotating together with second shaft (21) and inhibiting the rotation of second shaft (21) by engaging with regulator (36) located at the second position; and a regulation cam (13) feeding regulator (36) from the second position to the first position.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 10, 2022
    Inventors: Yuji HAZAMA, Katsuhito NISHIZAWA
  • Patent number: 9277034
    Abstract: A spring unit including a zigzag spring 40A, 40B; a first sliding unit 20A including a first spring securing part 22 securing a first end of the spring, a first spring accommodating part 28A, 28B accommodating the spring; first slide guiding parts 25 on both sides of the first sliding unit; a second sliding unit 30A including a second spring securing part 32 securing a second end of the spring, a second spring accommodating part 36A, 36B accommodating the spring, second slide guiding parts 35 on both sides of the second sliding unit, wherein the first and second slide guiding parts 20A and 30A are engaged to mutually slide, and the spring 40A, 40B is held inside a space formed between the first and second spring accommodating parts 28A, 28B, 36A, and 36B while the first and second slide guiding parts 25 and 35 are engaged.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: March 1, 2016
    Assignee: MITSUBISHI STEEL MFG. CO., LTD.
    Inventor: Yuji Hazama
  • Patent number: 9004464
    Abstract: A curved spring includes one and another end parts configured to approach and separate relative to each other in an approaching/separating direction and plural beam parts that bend between the one end part and the other end part and extend in an extending direction. The plural beam parts are arranged in a width direction orthogonal to the approaching/separating direction. At least one combination of adjacent beam parts among combinations of the plural beam parts includes an outer side beam part having a width greater than a width of an inner side beam part in the width direction. The outer side beam part has a length less than a length of the inner side beam part in the approaching/separating direction. The one and the other end parts and at least one beam part of the plural beam parts are integrally molded on a shared plane by a synthetic resin.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 14, 2015
    Assignee: Mitsubishi Steel Mfg. Co., Ltd.
    Inventors: Yuji Hazama, Kentaro Nagasawa, Toru Hirokane
  • Publication number: 20130125683
    Abstract: A curved spring includes one and another end parts configured to approach and separate relative to each other in an approaching/separating direction and plural beam parts that bend between the one end part and the other end part and extend in an extending direction. The plural beam parts are arranged in a width direction orthogonal to the approaching/separating direction. At least one combination of adjacent beam parts among combinations of the plural beam parts includes an outer side beam part having a width greater than a width of an inner side beam part in the width direction. The outer side beam part has a length less than a length of the inner side beam part in the approaching/separating direction. The one and the other end parts and at least one beam part of the plural beam parts are integrally molded on a shared plane by a synthetic resin.
    Type: Application
    Filed: August 2, 2011
    Publication date: May 23, 2013
    Inventors: Yuji Hazama, Kentaro Nagasawa, Toru Hirokane
  • Publication number: 20120325034
    Abstract: A spring unit including a zigzag spring 40A, 40B; a first sliding unit 20A including a first spring securing part 22 securing a first end of the spring, a first spring accommodating part 28A, 28B accommodating the spring; first slide guiding parts 25 on both sides of the first sliding unit; a second sliding unit 30A including a second spring securing part 32 securing a second end of the spring, a second spring accommodating part 36A, 36B accommodating the spring, second slide guiding parts 35 on both sides of the second sliding unit, wherein the first and second slide guiding parts 20A and 30A are engaged to mutually slide, and the spring 40A, 40B is held inside a space formed between the first and second spring accommodating parts 28A, 28B, 36A, and 36B while the first and second slide guiding parts 25 and 35 are engaged.
    Type: Application
    Filed: March 10, 2011
    Publication date: December 27, 2012
    Inventor: Yuji Hazama